Professional MEP Design Software

Complete HVAC, Plumbing, and Controls engineering calculations. Title 24 & ASHRAE 90.1 compliance built-in.

1,300+ Engineering Modules
523 Weather Locations
200+ Compliance Tools
JΔS Engineering Suite - Professional MEP Design Software

Everything You Need for MEP Design

From load calculations to compliance reports, all in one powerful suite.

HVAC Load Calculations

Accurate heating and cooling load calculations using ASHRAE methodologies. Room-by-room analysis with detailed breakdowns.

Energy Compliance

Built-in Title 24-2025, ASHRAE 90.1-2022, and IECC 2024 compliance. Generate NRCC, LMCC, and NRCI forms automatically.

Plumbing Design

IPC, CPC, and UPC code support. Fixture unit calculations, pipe sizing, and water demand analysis.

Revit Integration

Seamless Revit integration with 3 specialized add-ins. Import room data, run clash detection, and boost MEP productivity.

Equipment Selection

Chillers, boilers, pumps, fans, VAV boxes, and more. Manufacturer catalog integration with performance curves.

Energy Simulation

8760-hour annual energy simulation. TMY3/EPW weather data support. DOE-2 compatible outputs.

See It in Action

A professional desktop application built for real MEP engineering workflows.

JAS Engineering Suite - Project Dashboard with sidebar, workflow bar, and room load summary

Project Dashboard

Navigate 1,300+ engineering modules through an organized sidebar. Track project progress with the 7-step workflow bar from Project Setup to Final Reports.

HVAC load calculations with room data, wall exposures, and cooling load breakdown

HVAC Load Calculations

Room-by-room heating and cooling load analysis using ASHRAE methodologies. Wall orientation breakdown, CLTD/CLF factors, and detailed component-level results.

Title 24 and ASHRAE 90.1 compliance checking with NRCC forms and Appendix G results

Energy Compliance

Automatic NRCC/LMCC form generation for Title 24. ASHRAE 90.1 Appendix G with 4-rotation baseline, ECB calculations, and unmet hours tracking.

Live bidirectional Revit sync showing spaces, sync activity, and results writeback

Revit Integration

Live bidirectional sync with Revit via WebSocket. Import spaces, walls, and windows with actual U-values. Push calculation results back to Revit parameters automatically.

Built for MEP Engineers

A comprehensive engineering platform designed for real-world MEP workflows.

Download JΔS Engineering Suite

Available for Windows 10/11. Requires 8GB RAM, 2GB disk space.

JΔS Engineering Suite v1.2

Latest release - February 2026

  • Windows 10/11 (64-bit)
  • Size: ~500 MB
  • Includes 3 Revit add-ins
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Note: Windows may show a SmartScreen warning for new software. Click "More info" then "Run anyway" to install. The software is safe.

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Response Time

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Documentation

View our documentation